Delicata Squash Au Gratin with Gruyère combines delicate winter squash with Gruyère, Parmigiano, garlic, shallots, thyme, and cream for a silky, comforting side dish. Thin slices of delicata soften as they bake, while the cheeses melt into the warm cream sauce. Easy enough for a weeknight but elegant enough for holiday tables.
Looking for more squash recipes?
Try scalloped butternut squash, spaghetti squash rings, or hasselback butternut squash for more seasonal ideas.
💡 Recipe Overview
- Prep and Cook Time: About 20 minutes to prepare and 40 minutes to bake
- Cooking Method: Oven-baked with stovetop sauce
- Dietary Info: Works with Primal and ancestral-style diets
- Skill Level: Moderate
Note: An ancestral or nourishing-foods approach emphasizes traditional ingredients and preparation methods.
Reasons to Keep This on Repeat
This Delicata Squash Au Gratin is a favorite because it highlights the natural sweetness and tender texture of delicata squash while delivering a rich, cheesy sauce. It’s straightforward to prepare, requires minimal fuss, and produces a golden, bubbly finish that feels celebratory without being complicated.
It’s ideal for fall and winter, and it pairs beautifully with roasted or grilled proteins. I return to this recipe often during squash season because it’s reliable, comforting, and crowd-pleasing.
Ingredients for Delicata Squash Au Gratin
This recipe uses delicata squash, which has a thin, edible skin that softens as it bakes, so peeling is optional. Butter sautés the shallots and provides richness, while garlic and fresh thyme add subtle savory notes. Heavy cream creates a sauce that thickens gently in the oven. A combination of Gruyère and Parmigiano gives a smooth, flavorful melt. Season simply with sea salt and black pepper. Breadcrumbs are optional for a crisp topping.
Substitutions and Variations
- Onion Swap — If you don’t have shallots, use yellow or sweet onion; the flavor will be a bit stronger.
- Cheese Substitute — Gruyère can be replaced with fontina, Comté, or Swiss; Parmigiano can be swapped with Pecorino or another salty hard cheese.
- Topping — Omit breadcrumbs for a softer top, or use crushed crackers or toasted nuts for texture.
How to Make Baked Delicata Squash
The printable recipe appears below in the recipe card. Follow these step-by-step instructions for best results.
Step 1. Cut
Trim the squash ends, scoop out the seeds, and slice the squash 1/8–1/4 inch thick so it cooks evenly. You can halve the squash lengthwise and slice into half-moons if that’s easier. Arrange slices in an even layer in a buttered baking dish.
Step 2. Cook
Melt butter in a skillet over medium heat. Add shallots and cook until soft and lightly golden, about 8–10 minutes. Add garlic and thyme and cook until fragrant, about 1 minute.
Step 3. Simmer
Lower the heat and add the heavy cream. Stir and simmer gently—do not boil—until the cream thickens slightly, 3–5 minutes. Season with salt and pepper to taste.
Step 4. Stir
Remove from heat and stir in half of the grated Gruyère and half of the Parmigiano until a silky cheese sauce forms.
Step 5. Pour
Pour the warm cream-and-onion sauce evenly over the arranged squash, using the back of a spoon to coat the slices.
Step 6. Bake
Top with the remaining cheeses and breadcrumbs if using. Cover loosely with foil and bake at 375°F (190°C) for about 25 minutes, then remove the foil and bake an additional 10 minutes until golden and bubbly and the squash is tender. Let rest 10 minutes before serving so the sauce sets slightly.
Helpful Tips
- Re-crisping the topping — If the topping loses its crunch after refrigeration, reheat uncovered in the oven so the breadcrumbs and cheese can crisp instead of steaming.
- Excess liquid — After chilling, you may see extra liquid. Carefully drain or spoon it off before reheating; the sauce will tighten as it warms.
💭Make-Ahead Suggestion!
Assemble the dish up to the point of baking and refrigerate, covered, for up to 24 hours. Add breadcrumbs just before baking and allow a few extra minutes in the oven if the dish is chilled.
Serving Suggestions
This gratin is a classic warm side dish for autumn and winter. It pairs exceptionally well with roasted poultry, braised duck, or lamb, and also complements a simple green salad and a grilled protein for a lighter meal.
Frequently Asked Questions
How do I store and reheat delicata squash gratin?
Store leftovers in an airtight container in the refrigerator for up to 4 days. Reheat in a 325°F oven until warmed through, about 15–20 minutes. You can also reheat gently on the stovetop with a splash of cream or broth, though the texture may be softer. Freezing is not recommended.
Do I need to peel delicata squash?
No. Delicata squash has a thin, edible skin that softens when baked and can be eaten as part of the dish, saving prep time and adding color and texture.
Printable Recipe
Delicata Squash Au Gratin with Gruyère Cheese
Author: Anya @ Prepare & Nourish
Delicata Squash Au Gratin with Gruyère and Parmigiano, garlic, shallots, thyme, and cream yields a tender, creamy side dish that suits both weeknights and special occasions.
Ingredients
- 2 medium delicata squash
- 2 tablespoons butter
- 2 shallots, thinly sliced
- 4 cloves garlic, minced
- 1 teaspoon fresh thyme leaves
- 1 pint heavy cream
- 1 cup Gruyère cheese, grated
- 1/2 cup Parmigiano (Parmigiano-Reggiano), grated
- 1/2 teaspoon sea salt, or to taste
- 1/4 teaspoon black pepper
- 1/4 cup breadcrumbs (optional)
Instructions
- Preheat the oven to 375°F (190°C). Butter an 8×8-inch or similar baking dish. Trim the squash ends, remove seeds, and slice 1/8–1/4 inch thick. Arrange slices evenly in the dish.
- In a skillet over medium heat, melt the butter. Add shallots and cook 8–10 minutes until soft and lightly golden. Add garlic and thyme and cook 1 minute until fragrant.
- Reduce heat to medium-low and pour in the heavy cream. Stir and simmer gently 3–5 minutes until slightly thickened. Season with salt and pepper.
- Remove from heat and stir in half of the Gruyère and half of the Parmigiano until melted into a smooth sauce.
- Pour the warm sauce over the squash, using the back of a spoon to coat the slices evenly.
- Top with the remaining cheeses and breadcrumbs if using. Cover loosely with foil and bake 25 minutes. Uncover and bake 10 more minutes until golden and bubbly and the squash is tender. Let rest 10 minutes before serving.
Notes
Storage: Refrigerate leftovers in an airtight container for up to 4 days. Reheat in a 325°F oven until warmed, about 15–20 minutes. Reheating on the stovetop is possible with a splash of cream or broth but may soften the texture. Freezing is not recommended.
Nutrition (per serving, estimate)
Calories: 504 kcal | Carbohydrates: 21 g | Protein: 14 g | Fat: 42 g | Saturated Fat: 26 g | Sodium: 576 mg | Fiber: 3 g | Sugar: 7 g | Vitamin A: 3631 IU | Vitamin C: 21 mg | Calcium: 433 mg
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